move current namespace logic to config

[KPostOffice]

What changes have been made

I was running into some issues testing locally without specifying a namespace. I realized we could default early and make the error much clearer

Verification steps

Use the codeflare_sdk in a jupyter nb locally and don't specify namespace in your cluster configuration

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

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[openshift-merge-robot]

PR needs rebase.

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[Bobbins228]

Hey Kevin this looks really good. Is it cool if you update this to work with the refactored project?

Perhaps get_current_namespace should live in kube_api_helpers WDYT?

[Bobbins228]

Perhaps kube_api_helpers doesnt work as there could be a circular import.
What would you think of a utils file in the utils module for helper functions like this?

I say this because as we add more modules e.g. KFT Training Client we would probably prefer common functions like this to live there? WDYT?

[KPostOffice]

I'll take a look at finding a better place for this. A util file definitely makes more sense than auth.py